Apparatus for combustion of gas.



H. R. MAXfiixE.

APPARATUS FOR COMBUSTION OF 61%- APPLICATION FILED OCT. 9, I936.

Patented Apr, 9,, 191$.

"Leonora.

inhumane-rare HARRY R. mfliif, OF MUNCIE, INDIANA, ASSIGNOR'TO MAXONBROTHERS COMI 'A I'IY,

' F CHICAGQ, ILLINOIS, A CORPORATION OF DELAWARE.

APPARATUS FOR COMBUSTION 0F GAS.

Specification of Letters Patent.

Patented Apr. 9, i918.

' Application filed October 9, 1916. Serial No. 124,747.

To all whom it may concern:

Be it known that I, HARRY R. hisxon, a

citizen of the United, States, residing at Muncie, in the county ofDelaware and State of Indiana, have invented certain new and usefulImprovements in, an Apparatus for Combustion of Gas; of which thefollowing is a specification.

My invention relates to means for securing a complete mixture of thecombustible gas with air and complete combustion of the mixturebeginning immediately as it enters the combustion chamber from theburner in a socalled lazy flame, to Wit, one in which the gasestravelbut slowly. For this purpose I employ a fari or its equivalent whichreceives the air to support combustion at substantially atmosphericpressure and preferably, where no preheating is employed, directlyffomthe-atmospliere. The fuel gas, previously unmixed with air, is alsofed into the fan casing, in which the air and gas are mihed in suitableproportions to support combustion, the percentage of air being Isomewhat in excess of that theoretically required. The mixture is fed tothe furnace through a conduit of considerable capacity and unobstructedthroughout whereby the inflammable mixture reaches the burner or devicewhere a high degree of heat is desirable. Each furnace maybe providedwith one or more burners and in the present in stance I have shown twoburners 5, 5, for each furnace and each burner is connected to aseparate fan 6, 6, by a pipe 7, 7 for supplying it with the propermixture of gas and air. The burner preferably is so conopening into thecombustion chamber in great volume at low pressure, and is immediateiyignited and consumed in a lazy flame. I

In the accompanying drawings I have shown a preferred embodiment of thein vention and in the following specification described the samespecifically. It is to be understood, however, that the specificdisclosure is for the purpose of cxemplification only and that the scopeof the invention is defined in the following claims in which I haveendeavored to distinguish it from the prior art without, however,relinquishing or abandoning any portion or feature thereof.

In the drawings, Figure 1 is a front elevation'of a furnace having myinvention applied thereto; and Figs. 2 and 3 side and front eievationsrespectively of the pum nected to the furnace that. there is nosubstantial excess of air about the same though in its broader aspect myinvention may be utilized where more or less'air, in addition to thatsupplied by the fan, is introduced adjacent the burner. The fan casing 8and fan proper 9 maybe of any usual or approved type but preferably theair inlet. to the casing is provided with a rotary valve or damper 10which maybe adjusted to control the supply of air to the vfan. Aninletpipe 11 for sup plying gas to the fan is mounted concentrically ofthe air inlet and damper and in the construction shown forms the arborfor the latter. The gas inlet pipe 11 is provided with a valve 12 forcontrolling the supply of gas.

By means of the valve and damper the 1 relative quantities of airandogas admitted to the fan. may be regulated and in practicethey are soset as to furnish the proportions of air and gas found to furnish themost satisfactory combustion, the proportion of air being somewhat inexcess of that theoretically required to support combustion. The airaridgas entering the fan are very thoroughly, mixed therein and drivenforward to the burners at a speed sufficient to overcome the tendency ofthe fiame'at the burner to strike back or travel toward the fan.Thusbydriving the combustible mix ture to the burner at sufficient speedstriking back is prevented without the use of screens, etc, commonlyemployed for this purpose, the proper speed and mixture being obtainedby adjusting the damper and valve and speed of revolution of the fan.Even in the event of an improper mixture or speed the combustion orexplosion is limited to the fan chamber in which the "inixture 1S firstmade.- My improved apparatus makes it' feasible to make each furnace ofa bank and each burner of the furnace absolutely independent of theother furnaces and burners so that in the event that it is necessary tonaces i though it will be obvious that it. -,put one of the burners orfurnaces out of opmay be used .in connection with any other oration, asfor example, for making repairs,

the operation of the other furnaces and burners is not interfered With;

I claim: p 1.- An apparatus for burning gas comprisiing a fan having acentral opening, a fuel supply pipe connected to said opening, and adamper surrounding the fuel supply pipe andcontrolling the admission ofair.

2. An apparatus for burning fuel compris- 19 ing a fan, having a centralopening, a fuel supply pipe connected to said opening but of smallerdiameter leaving an air-supply opening adjacent the same, and a rotaryvalve mounted on the fuel-supply pipe and adapt- 15 ed to close the airopening.

3. In a device of the class described, a 1 burner, a fan, anunobstructed conduit leading from the fan to the burner, the casing ofthe fan being directly open to the atm0sphere to admit air to the fan atatmospheric the fan to the burner, a valve for regulating 30 thequantity of air admitted to the casing, a pipe for supplying fuel gasdirectly to the fan casing, a valve for controlling the supply of gas,and means outside the casing for driving the fan.

HARRY RQMAXON.

